package com.kim.common.util;


import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

import java.util.Map;

/**  
* SpringUtil.java
* Description: 
* 
* @author kim
* @date 2018年6月30日   
*/

@Component
public class SpringUtil implements ApplicationContextAware {
	private static ApplicationContext applicationContext = null;

    private final Logger logger = LoggerFactory.getLogger(SpringUtil.class);

    @Override
    public void setApplicationContext(ApplicationContext applicationContext)  {
       if(SpringUtil.applicationContext == null){
           SpringUtil.applicationContext  = applicationContext;
       }
        logger.info("ApplicationContext配置成功,在普通类可以通过调用SpringUtils.getAppContext()获取applicationContext对象,applicationContext="+ SpringUtil.applicationContext);

    }
 
    //获取applicationContext
    public static ApplicationContext getApplicationContext() {
       return applicationContext;
    }
 
    //通过name获取 Bean.
    public static Object getBean(String name){
       return getApplicationContext().getBean(name);
 
    }
 
    //通过class获取Bean.
    public static <T> T getBean(Class<T> clazz){
       return getApplicationContext().getBean(clazz);
    }
 
    //通过name,以及Clazz返回指定的Bean
    public static <T> T getBean(String name,Class<T> clazz){
       return getApplicationContext().getBean(name, clazz);
    }

    public static <T> Map<String, T>  getBeans(Class<T> clazz){
       return getApplicationContext().getBeansOfType(clazz);
    }


}
